Improvement in blasting-cartridges



i z s s z l Att orney N.FETERS, PHOTO-L|THOGRAPNER. WASHINGYON. D C.

UNrrun s'refrns Munir rrrcn,

PAUL A. OLIVER, OF WILKESBARRE,PENNSYLVANIA.

IMPROVEMENT IN BlLASTlNG-CARTRIDGES.

Specication forming part of Letters Patent No. 176,9SD, dated May 2, 1876; application led March 6, 1876.

To all whom. it may concern: in any manner deemed' most advantageous Be it known that I, PAUL A. OLIVER, of and expeditious. I may also simply dip the Wilkesbarre, in the county of Luzerne and in end of thecase A iu a solution of rubber of the State ot' Pennsylvania, have invented cersuch consistency that when dry it forms such tainnew. aud useful Improvements in Blastingrubber cup. Cartridges 5 and do hereby declare that the By having the base of the cartridge covered followingisa full, clear,'and exact description with an india-rubber cup, that part 0i the thereof, reference-being had to the accomcartridge is made waterproof, and when the pauying drawing, and to the letters of ref'- same is insertedin the orifice made, the torce erence marked thereon, making a part of this of the powder is not destroyed or weakened, specification. as would be the case where the material of e My invention relates to blasting-cartridges; which the cartridge is made is surrounded by audit consists in a case orcylinder provided a metallic cup, or has `a metallic cup within it, at its lower end with a rubber cup-fastened which would allow a limited space between thereto, as will be hereinafter luore fully set the metal and the cartridge material for thn forth. Y `moisture to penetrate.

Inorder to enable others skilled in the art lHaving thus fully described my invention, to which my invention appertaius to make and what I claim as new, and desire to secure by use the same, I will now proceed to describe Letters Patent, is t its construction and operation, referring to In blasting-cartridges, the case or cylinder the annexed drawing, which represents aside A, provided at its lower end with a rubber View of my cartridge-case with thc lower end cup, B, fastenedthereto, substantially as here' in vertical section. in set forth. l

" A represents the case or cylinder ma'de of In testimony that I claim the foregoing I paper, and provided at itslower end vwith a have hereunto set my hand this 6th day of cup, B, of rubber, inclosing said end aud form- March, 1876.

ing the bottom for the same. This cup may PAUL A. OLIVER. 4 be put ou the end of the cylinder while hot, Witnesses:

and thus stick to the same, or it may be fast GHAS'. P. HUNT,

e'ned by glue or other adhesive substance, or GEO. II. KEE'IS. 

